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while (1) Vs. for (;;) Is there a speed difference?
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In perl, they result in the same opcodes:
$ perl -MO=Concise -e 'for(;;) { print "foo\n" }'
a <@> leave[1 ref] vKP/REFC ->(end)
1 <0> enter ->2
2 <;> nextstate(main 2 -e:1) v ->3
9 <2> leaveloop vK/2 ->a
3 <{> enterloop(next->...
How to identify CAAnimation within the animationDidStop delegate?
...lapping CATransition / CAAnimation sequences, all of which I needed to perform custom operations when the animations stopped, but I only wanted one delegate handler for animationDidStop.
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How can I convert byte size into a human-readable format in Java?
How can I convert byte size into a human-readable format in Java?
25 Answers
25
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Android - Launcher Icon Size
For HDPI , XHDPI , etc. what should be the ideal size of the launcher icon? Should I have to create 9-Patch images for the icon to scale automatically, or would it be better to create separate icons?
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How do I space out the child elements of a StackPanel?
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Use Margin or Padding, applied to the scope within the container:
<StackPanel>
<StackPanel.Resources>
<Style TargetType="{x:Type TextBox}">
<Setter Property="Margin" Value="0,10,0,0"/>
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Capture keyboardinterrupt in Python without try-except
...s, you can install an interrupt handler using the module signal, and wait forever using a threading.Event:
import signal
import sys
import time
import threading
def signal_handler(signal, frame):
print('You pressed Ctrl+C!')
sys.exit(0)
signal.signal(signal.SIGINT, signal_handler)
print('...
Overriding superclass property with different type in Swift
...rride a property on a superclass's with another object subclassed from the original property?
14 Answers
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How to list the properties of a JavaScript object?
...simplified version is:
var getKeys = function(obj){
var keys = [];
for(var key in obj){
keys.push(key);
}
return keys;
}
Alternatively replace var getKeys with Object.prototype.keys to allow you to call .keys() on any object. Extending the prototype has some side effects and I ...
FormsAuthentication.SignOut() does not log the user out
...a user from browsing a site's pages after they have been logged out using FormsAuthentication.SignOut? I would expect this to do it:
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How do I sort strings alphabetically while accounting for value when a string is numeric?
I'm trying to sort an array of numbers that are strings and I'd like them to sort numerically.
19 Answers
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